9. Install the package dependencies in the generated `requirements.txt` file.

10. Copy the `app` directory to the `/code` directory.

11. Use the `fastapi run` command to run your app.

!!! tip
    Click the bubble numbers to see what each line does.

A **Docker stage** is a part of a `Dockerfile` that works as a **temporary container image** that is only used to generate some files to be used later.